Very interesting idea. I like the puzzle aspect and how it is a bit of a brain workout. Personally, I never got into Sudokus, and it would take too long to read/solve when I need the time somewhat quickly. My other concern is the small numbers might be hard to read.

interesting, but takes a bit long…is it always the same game board, or does that change?
maybe don’t include seconds?? it might be distracting to have the display change every second
…and how do you show a zero?

I can see this really appealling to puzzle heads, its not up mys street but I do appreciate the look of the thing.
The reveal feature is a necesity for me. The numbers maybe a little small for glasses wearers. I think a coloured backlight would add a little something. 5 stars but no

First of all, if someone makes a Sudoku watch, it should be Tokyoflash. It’s japanese, it’s a classic, it’s popular.

For Sudoku fans it could be more difficult. For people who prefer >at a glance< displays, it's already too complicated. So finding a broad audience (like with more stylish, less geeky displays) is tricky. I think the seconds are too much. You already need a second to figure out a number and once you did, it's gone. You have 9 fields there. Maybe it's possible to use the 8 outer ones for time and date. Or just the four corners for time OR date.

A touch screen for the answers is good. I would say, add a little stylus and make this watch a wrist game. Then noobs can learn and pro's have fun. You can train your brain and more difficult time displays are possible… I know the price would suddenly increase, but this had to be said :)

I like this idea although it is tough to like. For those of you having issues with solving the puzzle it would be, like virtually any watch, simple to figure out once you owned it for awhile. This is especially true if the numbers don’t shuffle or move around. It would have a standard mode where the numbers stay in a static position and a puzzle mode. Besides it could be made easy in a “standard mode”: first, fourth, seventh columns always have all numbers. The second column would either have all numbers or be missing the 1 (possibly a 2 for 24 hour display), third column would be missing a digit between 1-9 or have all numbers to represent 0. That’s the hour… The remaining columns would then be missing 1-9 for that digit or have all numbers for 0. Furthermore columns 5 and 7 would never miss any digit higher than a “5” since at “6” its a new minute or hour.

In summation this watch could be easy and have a puzzle mode. Plus in TF scheme, at a glance would confuse most people. Good idea, but would be hard to see on a small display. 5* but also no.